Note 7 - Other Intangible Assets (Details) - Intangible Assets (USD $) In Thousands, unless otherwise specified	9 Months Ended
	Feb. 28, 2014	May 31, 2013
Note 7 - Other Intangible Assets (Details) - Intangible Assets [Line Items]
Intangible assets subject to amortization - cost	$ 803,525	$ 798,458
Intangible assets subject to amortization - accumulated amortization	(129,852)	(90,005)
Intangible assets subject to amortization - net	673,673	708,453
Intangible assets not subject to amortization - cost	6,000	6,150
Intangible assets not subject to amortization - net	6,000	6,150
Other intangible assets, net	809,525	804,608
Other intangible assets, net	(129,852)	(90,005)
Other intangible assets, net	679,673	714,603
In Process Research and Development [Member]
Note 7 - Other Intangible Assets (Details) - Intangible Assets [Line Items]
Intangible assets not subject to amortization - cost	6,000	6,150
Intangible assets not subject to amortization - net	6,000	6,150
Customer Relationships [Member]
Note 7 - Other Intangible Assets (Details) - Intangible Assets [Line Items]
Intangible assets subject to amortization - weighted average life	20 years
Intangible assets subject to amortization - cost	470,876	465,909
Intangible assets subject to amortization - accumulated amortization	(57,860)	(40,392)
Intangible assets subject to amortization - net	413,016	425,517
Other intangible assets, net	(57,860)	(40,392)
Technology-Based Intangible Assets [Member]
Note 7 - Other Intangible Assets (Details) - Intangible Assets [Line Items]
Intangible assets subject to amortization - weighted average life	11 years
Intangible assets subject to amortization - cost	291,250	291,250
Intangible assets subject to amortization - accumulated amortization	(64,804)	(44,526)
Intangible assets subject to amortization - net	226,446	246,724
Other intangible assets, net	(64,804)	(44,526)
Trade Names [Member]
Note 7 - Other Intangible Assets (Details) - Intangible Assets [Line Items]
Intangible assets subject to amortization - weighted average life	15 years
Intangible assets subject to amortization - cost	40,000	40,000
Intangible assets subject to amortization - accumulated amortization	(6,754)	(4,754)
Intangible assets subject to amortization - net	33,246	35,246
Other intangible assets, net	(6,754)	(4,754)
Off-Market Favorable Lease [Member]
Note 7 - Other Intangible Assets (Details) - Intangible Assets [Line Items]
Intangible assets subject to amortization - weighted average life	8 years
Intangible assets subject to amortization - cost	1,200	1,200
Intangible assets subject to amortization - accumulated amortization	(401)	(313)
Intangible assets subject to amortization - net	799	887
Other intangible assets, net	(401)	(313)
Deferred Licensing Costs [Member]
Note 7 - Other Intangible Assets (Details) - Intangible Assets [Line Items]
Intangible assets subject to amortization - weighted average life	6 years
Intangible assets subject to amortization - cost	199	99
Intangible assets subject to amortization - accumulated amortization	(33)	(20)
Intangible assets subject to amortization - net	166	79
Other intangible assets, net	$ (33)	$ (20)